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Friday, September 17, 2021

Solution Exercise 92**: python algorithm which transforms a list into a list made up of the means of the partial sums

Exercise 92**

Write a python algorithm which transforms a list of integers
L = [n1, n2, n3, ...., np]
into a list whose elements are the averages of the partial sums:
[n1, average(n1, n2) , average(n1, n2, n3), ...., average(n1, n2, ..., np)]

Solution

# Function that calculates the average of a list of numbers
def average_list (L):
    n = len (L)
    # initialization of the sum of the list elements
    sum = 0
    for x in L:
        sum = sum + x
    return sum / n

# Function which determines the average list of the partial sums
def average_sum (L):
    # initialization of the list of partial sums
    l_average = []
    for i in range (1, len (L)):
        l_average.append (average_list (L [0: i]))
    
    return l_average

# Example
L = [10, 14, 12, 10, 13, 15]
print (average_sum (L))
# The output is: [10.0, 12.0, 12.0, 11.5, 11.8]


Younes Derfoufi
my-courses.net

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